Well recently my friend chris and I have talked about the vault of glass and its possible theories for final bosses, other chests, and secret spaces. Like any other anxious gamers, we had come up with theories of our own. Lets get to it. Theory #1 : My friend chris had thought very serious about how after killing atheon there is "times vengeance" that shows up within 3-4 minutes. Well he thinks that if the relic holder could open the door leading to the jumping maze right before killing atheon that the your whole fire team could have enough time to find a way back to the gorgons labyrinth so when "times vengeance" does show up the gorgons become weaker allowing you to kill as many as possible which could entail another chest to spawn or a loot drop of sorts. Theory #2 : To correspond with opening the door right before killing atheon maybe, if you couldn't get all the way back to the top, that the vex time gate that just across the way will be active teleporting you to either gorgons labyrinth or to another boss. Theory #3 : Maybe bungie would like us to overthink the insane amount of possibilities for more loot or another boss that they made the answer we are looking for just so simple. Now, after killing atheon you and your fire team should linger around and wait for "times vengeance" to show up then you all rush though one of the open vex times gates either past (mars) or future (venus) one, or maybe have them both active and split up the fire team up to see if another boss spawns in each one. Now, i have not tried any of these so nothing is guaranteed but please feel free to try them yourselves and leave some feedback. Thanks for reading!